Merge pull request #48699 from anveshreddy18/patch-1

Update _index.md

Author: k8s-ci-robot

content/en/docs/concepts/workloads/pods/_index.md

@@ -408,6 +408,6 @@ To understand the context for why Kubernetes wraps a common Pod API in other res
 
 * [Aurora](https://aurora.apache.org/documentation/latest/reference/configuration/#job-schema)
 * [Borg](https://research.google.com/pubs/pub43438.html)
-* [Marathon](https://mesosphere.github.io/marathon/docs/rest-api.html)
+* [Marathon](https://github.com/d2iq-archive/marathon)
 * [Omega](https://research.google/pubs/pub41684/)
 * [Tupperware](https://engineering.fb.com/data-center-engineering/tupperware/).